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This study aimed to assess the immunoexpression of cell proliferation markers (Ki-67 and Mcm-2) in oral tongue cancer, correlating it with patients’ age and prognostic indicators. Sample was composed of 22 cases under 40 years and 22 over 50 years of age. Clinical staging and histological grade of malignancy were obtained. Cell proliferation was evaluated through labeling indices. Statistical analysis was performed (p<0.05 for statistical significance). Most young patients were stages III/IV (n=13/65 %) and most older patients were stages I/II (n=11/61.1 %) (p>0.05). Mean Ki-67-LI in young and older patients was 42.4 % and 44.15 %, respectively (p>0.05). Mean Mcm-2-LI was higher in older (63.6 %) than in young patients (55.75 %) (p<0.05). We found that young patients presented more aggressive lesions in comparison to older patients, however Mcm-2 expression was significantly higher in older than in young patients. SCC of tongue can be more aggressive in young patients, and this may not be related to cell proliferation. Our findings for Mcm-2 LI and Ki-67 LI suggests that Mcm-2 could be a more sensitive marker for cell proliferation.

Immunoexpression of Cell Proliferation Markers in Oral Squamous Cell Carcinoma